Water is an essential resource that is required by
all life on Earth. Studying the movement, availability, and quality of water are the jobs of a hydrologist. More
specifically hydrologists study the chemical properties, biological interactions, and the physical processes that
govern the water cycle.

This happens through different pathways and at different rates but the central concepts remain
the same. Water evaporates from the ocean, condenses as clouds, moves over land, and precipitates.
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